Abstract: A voice-control system for motor vehicles has a plurality of spaced microphones emitting respective microphone signals, and an evaluation unit connected to the microphones. This unit serves for assembling correlation pairs from the signals of two of the microphones, calculating a correlation coefficient for each correlation pair, detecting an energy value for each microphone, detecting a respective delay time of a voice signal between a voice signal source and the each of the microphones, and selecting in dependence on current correlation coefficients of the correlation pairs, on the current energy values of the microphones, and on the current delay time of the voice signal to the microphones, that microphone whose signal is optimal as a basis for the operation of the voice-control system.

Abstract: This object is attained by the combination of a motor-vehicle safety belt formed as a flexible longitudinally extending band and formed with a longitudinally extending and laterally substantially closed passage with an insert fittable into the passage and comprised of a flexible and elongated support strip and at least one electrical or electronic element usable by a motor-vehicle passenger employing the belt secured to the strip.

Abstract: This object is attained by the combination of a motor-vehicle safety belt formed as a flexible longitudinally extending band and formed with a longitudinally extending and laterally substantially closed passage with an insert fittable into the passage and comprised of a flexible and elongated support strip and at least one electrical or electronic element usable by a motor-vehicle passenger employing the belt secured to the strip.

Abstract: A voice-control system for motor vehicles has a plurality of spaced microphones emitting respective microphone signals, and an evaluation unit connected to the microphones. This unit serves for assembling correlation pairs from the signals of two of the microphones, calculating a correlation coefficient for each correlation pair, detecting an energy value for each microphone, detecting a respective delay time of a voice signal between a voice signal source and the each of the microphones, and selecting in dependence on current correlation coefficients of the correlation pairs, on the current energy values of the microphones, and on the current delay time of the voice signal to the microphones, that microphone whose signal is optimal as a basis for the operation of the voice-control system.

Abstract: A safety belt has an inner face turned toward the body of a user and an outer face turned away from the user. A plurality of sensor are mounted on the outer face, and the inner face is devoid of sensors. A selector connected to the sensors determines which sensor is best positioned for signal quality and for using the signal therefrom.

Abstract: The aim of the invention is to apply a sensor arrangement to a belt, especially a safety belt (1) of a motor vehicle, in such a way that the function of the safety belt is restricted as little as possible or not at all in terms of both the mechanical resistance thereof and the sliding and rolling characteristics thereof. To this end, the sensors (4) of the sensor arrangement are applied to the upper side (5) of the safety belt (1), which opposes the body of the passenger of the motor vehicle, the lower side (6) of the safety belt (1), facing the body of the passenger of the motor vehicle, remaining free and unchanged.

Abstract: In a microphone mounting for a hands-free system in automotive vehicles, the microphone is mounted on the seat belt. In one embodiment the microphone is seated in a sheath which is fastened to the upper belt deflection and through which the belt can freely pass. The sheath consists of two mutually displaceable flat sleeves, of which the lower one accommodates the microphone whose position relative to the passenger's mouth can be adjusted in an optimum way by a mutual displacement of the two sleeves. In another embodiment the microphone is provided at its side facing the belt with contacts that are brought into electrical contact with conducting wires integrated into the belt so as to be connected to the telephone circuit.

Abstract: A microphone module, comprising a microphone capsule (2) with an amplifier printed circuit board (4) attached thereto, is provided with a shield arrangement in the form of a half-shell, which encompasses the amplifier component elements located on one side of the printed circuit board, and which is soldered to the continuous metal lamination coating located on the opposite side of said board. The resulting shield trough surrounds the half of the metallic microphone capsule, fitted into it, while making contact thereto. The half of the rear side of the microphone capsule projecting above the printed circuit board (4) is provided with a metallized shield (14), which is in contact with the capsule housing and with the lamination coating (12) of the printed circuit board (4). The amplifier circuit on the printed circuit board is therefore completely shielded and effectively protected against interference scatter.

Abstract: A hands-free device for an automotive vehicle is designed as a unit consisting of loudspeaker (12) and microphone (20), in which the loudspeaker (12) which can be hung with a hook (6) onto the upper edge (4) of the B-pillar trim (2) is connected via an arm (18) to the microphone (20). A guide clip (26) which is fastened to the arm encompasses the safety belt (30), so that when the belt is fasted the microphone (20) rests in the neck/chest area of the driver and thus near the driver's mouth without presenting any obstacle. The loudspeaker (12) which is positioned near the B-pillar is positioned equally close to the ear, thus creating optimum preconditions for speech distinctness or intelligibility during speaking and hearing. On the other hand, in the unfastened state of the belt, the unit is suspended in the area between B-pillar and seat back without presenting any obstacle.

Abstract: In a hands-free device which is particularly suited for automotive vehicles, the loudspeaker (20) is arranged in a housing (16) which is loosely seated on the belt and which is fixed with a mounting to the B-pillar near the ear. The microphone (30) is positioned within a microphone housing (18) which can be displaced on and fixed to the belt (10), and communicates via an infrared path with a circuit provided in the loudspeaker housing. An accumulator which powers the microphone circuit is charged via charging contacts (34, 36) between microphone housing and loudspeaker housing when the microphone housing (18) is pushed towards the loudspeaker housing (16). Power can be supplied via a cable from the car socket, and the signal transmission between free-hands device and mobile telephone takes place via a plug connection with the head-set jack of the telephone.

Abstract: In a microphone mounting for a hands-free system in automotive vehicles, the microphone is mounted on the seat belt. In one embodiment the microphone is seated in a sheath which is fastened to the upper belt deflection and through which the belt can freely pass. The sheath consists of two mutually displaceable flat sleeves, of which the lower one accommodates the microphone whose position relative to the passenger's mouth can be adjusted in an optimum way by a mutual displacement of the two sleeves. In another embodiment the microphone is provided at its side facing the belt with contacts that are brought into electrical contact with conducting wires integrated into the belt so as to be connected to the telephone circuit.

Abstract: A microphone module, comprising a microphone capsule (2) with an amplifier printed circuit board (4) attached thereto, is provided with a shield arrangement in the form of a half-shell, which encompasses the amplifier component elements located on one side of the printed circuit board, and which is soldered to the continuous metal lamination coating located on the opposite side of said board. The resulting shield trough surrounds the half of the metallic microphone capsule, fitted into it, while making contact thereto. The half of the rear side of the microphone capsule projecting above the printed circuit board (4) is provided with a metallised shield (14), which is in contact with the capsule housing and with the lamination coating (12) of the printed circuit board (4). The amplifier circuit on the printed circuit board is therefore completely shielded and effectively protected against interference scatter.